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Fix wrong indexing when generating dummy tangents in GLTF import
(cherry picked from commit 14c776f798
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@ -2810,7 +2810,7 @@ Error GLTFDocument::_parse_meshes(Ref<GLTFState> p_state) {
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Vector<Vector3> normals = array[Mesh::ARRAY_NORMAL];
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for (int k = 0; k < vertex_num; k++) {
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Vector3 tan = Vector3(normals[i].z, -normals[i].x, normals[i].y).cross(normals[k].normalized()).normalized();
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Vector3 tan = Vector3(normals[k].z, -normals[k].x, normals[k].y).cross(normals[k].normalized()).normalized();
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tangentsw[k * 4 + 0] = tan.x;
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tangentsw[k * 4 + 1] = tan.y;
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tangentsw[k * 4 + 2] = tan.z;
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